GB/T 45131-2025 Chinese PDF (GB /T45131-2025) GB 20943-2025 GB/T 29456-2025_Chinese: Energy management systems

GB/T 29456-2025_Chinese: Energy management systems - Guidance for the implementation

GB/T 20032-2024_Chinese: Managing risk in projects - Application guidelines (Chinese: 项目风险管理 应用指南)

English versions: GB 32047-2025

GB/T 18649-2024_Chinese: Diagnostic techniques for contagious bovine pleuropneumonia (Chinese: 牛传染性胸膜肺炎诊断技术)

GB/T 22452-2025_Chinese: General specification of non-linear optical borate crystal devices (Chinese: 硼酸盐非线性光学单晶元件通用规范)

GB/T 45131-2025 Chinese PDF (GB /T45131-2025) GB 20943-2025 GB/T 29456-2025_Chinese: Energy management systemsGB T 45131 2025_Chinese: Analysis of water used in boiler and cooling system Determination of phosphate, chloride, silicate, total alkalinity, phenolphthalein alkalinity, hardness and iron Spectrophotometric detection by discrete analysis systems (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45131 2025